starting sh file via php - Raspberry Pi Forums

hello have code

code: select all

<form method="post"> <input type="submit" id="submit" name="submit" value="start"> <input type="submit" id="submit" name="submit" value="stop"> </form> <?php if ($_post["submit"] == "start") {echo "started!"; shell_exec('sh /home/ismet/usbrelayon.sh');} if ($_post["submit"] == "stop") {echo "stopped!"; shell_exec('sh /home/ismet/usbrelayoff.sh');} ?> 

why not work?

any clues in webserver error log?

/var/log/apache2/error.log (if using apache)

raspberrypi